[U-Boot] [PATCH 1/1] serial: ns16550: Read reg-io-type from device tree

Andy Shevchenko andy.shevchenko at gmail.com
Thu Aug 22 08:16:17 UTC 2019

On Thu, Aug 22, 2019 at 4:32 AM Bin Meng <bmeng.cn at gmail.com> wrote:
> On Thu, Aug 22, 2019 at 12:40 AM Park, Aiden <aiden.park at intel.com> wrote:

> > Right, this is a just hack. As Bin said, we may need refactor whole codes.
> > By the way, do we need to keep current design which selects I/O port or MMIO
> > at compile time by defining CONFIG_SYS_NS16550_PORT_MAPPED
> > or CONFIG_SYS_NS16550_MEM32?
> I think we should drop these 2 config options, and refactor the whole
> 16550 driver, eg: porting the Linux 8250 driver to U-Boot.

Linux 8250 is quite old and actually full of quirks which makes it not
the best example.
Better not to take it and develop more clean solution in U-Boot.

With Best Regards,
Andy Shevchenko

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